Lege Artis Medicinae

[NOVEL RESULTS ON SYSTEMIC LUPUS ERYTHEMATOSUS]

KISS Emese, GERGELY Péter, SZEGEDI Gyula

APRIL 20, 2005

Lege Artis Medicinae - 2005;15(04)

[Systemic lupus erythematosus is an autoimmune disorder. It stands at the focus of medical interest: basic scientists, clinicians and innovative biotechnologists all pay attention to lupus. Authors of this article present the novel scientific results on the etiopathogenesis, clinical and laboratory characteristics of SLE. Furthermore, authors discuss diagnostic problems and the possible therapeutic modalities. One of the most important results is the characterisation and mapping of the susceptibility genes as well as the analysis of their functional features. More and more is known about the relationship between natural and adaptive immunity, about the cooperation of T and B cells. The abnormalities of intracellular biochemical processes and signal transduction pathways have been cleared. The importance of cytokine network and infective agents in the pathogenesis of SLE has largely been investigated recently. With regards to the outcome of the disease, there is growing attention paid on chronic organ damages, such as end-stage renal disease, osteoporosis and atherosclerosis - in connection with the increased life expectancy. Evidence accumulates on the importance of immune-inflammatory processes in the initiation and perpetuation of osteoporosis and atherosclerosis. There is an urgent need for validated biomarkers which can predict the susceptibility, prognosis, clinical manifestations, activity and severity of SLE. To follow and measure the effectiveness of treatment is also required. Although the principals of lupus management have not changed, novel immune modulators, biological therapy and non-medical treatments (e.g. stem-cell transplantation) have become available. Further research and clinical observations may help to find the real place of such therapeutics.]

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[The 25th Congress of Colon Section of the Hungarian Society of Gastroenterology - Gyula, January 21-22. 2005.]

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[Hydrogen peroxide is formed during physiological and pathological processes in the human body. Hydrogen peroxide in high concentration and its more reactive compound (hydroxyl radical) can damage cells. Recent findings show that hydrogen peroxide in low concentration is required for many physiological pathways of cell signaling such as diabetes, platelet activation, inflammation, immune response. In human tissues the steady state concentration of hydrogen peroxide changes between 0.1 nmol/l-100 micromol/l. The main regulator of hydrogen peroxide metabolism is the enzyme catalase. This enzyme has a fast and high activity on high hydrogen peroxide concentrations and it shows a weak effect on its physiologic concentration. Acatalasemia, the inherited deficiency of enzyme catalase seems to be rather a syndrome than a simple enzyme deficiency as it was thought earlier. It is associated with changes in lipid, carbohydrate and erythrocyte metabolisms. Contrary to the the worldwide (11 countries) distribution of acatalasemia only two syndrome causing catalase mutations have been reported from Japan. Recently, four novel catalase mutations detected in one acatalasemic and 12 hypocatalasemic Hungarian families which mutations are responsible for the decreased catalase activity.]

Lege Artis Medicinae

[In the focus: Allergy]

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Lege Artis Medicinae

[THE VALUE OF EXHALED NITRIC OXIDE IN ASTHMA BRONCHIALE - DIFFERENTIAL DIAGNOSIS AND MANAGEMENT]

HORVÁTH Ildikó

[Although the differential diagnosis of asthma is simple in most cases, there are cases causing difficulties. Beside as an aid in diagnosis, there is a growing need for new tests to monitor airway inflammation to optimize and monitor the effect of treatment. Following the traditional methods used in everyday clinical practice a new method, the measurement of exhaled nitric oxide was introduced in the past decade. With this method, completely new information can be obtained about asthma supplementing other results in diagnosis making and disease monitoring. It is also expected to become the part of clinical practice in the next few years. The concentration of exhaled nitric oxide is elevated in asthmatic patients and its elevation is positively related to the degree of eosinophilic airway inflammation and symptoms. This measurement is approved in the European Union and in the USA for clinical use to monitor the effectiveness of anti-inflammatory treatment in asthma.]

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We aimed to analyze the clinical, laboratory and neuroimaging findings in patients with sporadic Creutzfeldt-Jakob disease (CJD) in a single center as well as to review other published cases in Turkey. Between January 1st, 2014 and June 31st, 2017, all CJD cases were evaluated based on clinical findings, differential diagnosis, the previous misdiagnosis, electroencephalography (EEG), cerebrospinal fluid and cranial magnetic resonance imaging (MRI) findings in our center. All published cases in Turkey between 2005-2018 were also reviewed. In a total of 13 patients, progressive cognitive decline was the most common presenting symptom. Two patients had a diagnosis of Heidenhain variant, 1 patient had a diagnosis of Oppenheimer-Brownell variant. Seven patients (53.3%) had been misdiagnosed with depression, vascular dementia, normal pressure hydrocephalus or encephalitis. Eleven patients (87%) had typical MRI findings but only 5 of these were present at baseline. Asymmetrical high signal abnormalities on MRI were observed in 4 patients. Five patients (45.4%) had periodic spike wave complexes on EEG, all appeared during the follow-up. There were 74 published cases in Turkey bet­ween 2005 and 2018, with various clinical presentations. CJD has a variety of clinical features in our patient series as well as in cases reported in Turkey. Although progressive cognitive decline is the most common presenting symptom, unusual manifestations in early stages of the disease might cause misdiagnosis. Variant forms should be kept in mind in patients with isolated visual or cerebellar symptoms. MRI and EEG should be repeated during follow-up period if the clinical suspicion still exists.

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[Chronic obstructive pulmonary disease is a very common comorbidity of hypertension and it is often unrecognised by physicians. The factors involved in the pathomechanism of both diseases should be realised when choosing treatment. Among factors, hypoxia, increased tone of sympathetic nervous system and activation of renin-angiotensin-aldosterone system should primarily be considered. Vascular wall damage and endothelial dysfunction has an important role in both conditions. The goals of treatment are elimination of risk factors, optimizing the blood pressure, the consequential prevention of cardio-cerebrovascular, renal and pulmonary damage; finally prolonging the patients’ life and improving their quality of life as well. Both hypertension and COPD significantly worsen the condition of COVID-19 patients since they increase the severity of the disease and the rate of in-patients’ and their mortality. In the treatment of hypertension among COPD and COVID-19 patients there must be emphasized the medication inhibiting of renin-angiotensin-aldosterone system, such as angiotensin-converting en­zyme inhibitors or angiotensin-II AT1 re­cep­tor antagonists. Special attention concerned the beneficial effect of mineralocorticoid receptor antagonist spironolactone. Other antihypertensive drugs (calcium channel blockers, thiazide-like diu­retics, high selectivity β1 receptor antagonists) may supplement the treatment if necessary. Long-acting β2 receptor agonists, muscarinic receptor antagonists and inhalation corticosteroids may be administered in double or triple combination also in hypertension and COPD as well. It is important to note, that statin therapy and also vitamin D3 improve the condition of COVID-19 patients.]

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